open fun onErrorRequest(session: EngineSession, errorType: ErrorType, uri: String?): ErrorResponse? (source)
A request that the engine wasn't able to handle that resulted in an error.
session - The engine session that initiated the callback.
errorType - The error that was provided by the engine related to the
type of error caused.
uri - The uri that resulted in the error.
Return
An ErrorResponse object containing content to display for the
provided error type.